package com.kuang.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Author: Zhang Dongwei
 * Date: 2022/7/26 13:05
 */
public class LoginHandlerInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

//        登录成功之后，应该有用户的session
        Object loginUser = request.getSession().getAttribute("loginUser");
        if(loginUser==null){// 没有登录成功
            request.setAttribute("msg","没有权限，请先登录");
            request.getRequestDispatcher("/index.html").forward(request,response);
        }else {
            return true;
        }

        return false;
    }
}
